Gauging machine



Sept. 15, 1931. w. H. BAKER 1,823,719

GAUGING MACHINE anonima .Passed sept. 15.1931

UNITED s'rA'rss" WILLIAM HENRY BAKER, l' DETROIT.

GAB COMPANY, -F DETROIT. KIUHIGAN,

moineau. Mannion ro neuen :lorca genommen or Ironman .emerse Rasmusspplioasoa'slea member 11.1981. Internetman, .f i i,

This invention relates' to a gauging maj chine and more particularly toa machine for gauging threaded members.

An object ofthe invention is to provide a machine for gauging threadedmembersto ascertain the relation of the faces to the axes thereof.

Another object ofthis invention is to pro.- vide a machine for testingthreaded mem-v m bers and morev particularly externally threaded membersto ascertain whether or not the faces of the membersl are' normal totheaxes thereof. l Another object of the invention is to provide a machinewith interchangeable parts for testing externally threaded members ofvarious sizes to ascertain whether or not the :taces of the members arenormal to the axes of the members. eo A further object of the inventionis to provide a machine for testing externally threaded members which isveirceedingl cheap and simple in structure and will e ficiently performits intended function.

A still further objectof the invention is to provide a machine fortesting externally threaded members to ascertain whether or not thefaces of the members are normal to the axes thereof and to simplify thetesting so that it may be accomplished expeditiously and yet accurately.

Other objects and structural details will be apparent from the subjoineddescription taken 1n connection with the drawings which form a part ofthis specification and in which:

Fig. 1 is a top plan View of the complete machine, Fig. 2 is a sideelevation,v

Fig. 3 is a view taken on Fig. 1, Fig. 4 is a modified form, partly insection and partly broken away, and,

Fig. 5 is a fragmentary view of the `modilied form. a

Referring to the Adrawings for more specific details of the invention,-10 represents a base having thereon a pair of clamping jaws comprisinga substantially semi-circular 5o .member 11 pinned or bolted to the baseas 4o line 3-3 of means of a p1vot'14. The

.el pins 19 andfbolts y20.

on its free end with a boss 22.

indicated at y19 and a: substantially semicircular member 18 pivoted onthe ase by pivoted member 1s provided With a tongue 15 adapted to engageav Blot lin one end of the member 11 andthe members coact to provide acircular clamp which may be opened and closed at will by means of ahandle 17 threaded, 1n the free endl of the member 18. The member 18supports a bracket 18 which is sultably secured thereto as Vb means ofdow. his bracket has an arm 21 normal thereto and plrovided uphe bosshas a .perpendicular bore 23 in axial alinement with the center of theclamping members 11 and 13 when in the closed position.

A sleeve 24 is fitted in the bore and mounted in the sleeve is a shaft25 secured in position b a nut 26 upon the up er end thereof. he lowerend of the sha has a diametralv bore in which is adjustably mounted anarm 27 adapted to be locked 1n an adjusted position by means of a setscrew 28. The arm 27 supports a standard indicating instrument 29, thecontact finger 80 of which may be adjusted to contact with the uspersurface of the member to4 be gauge or checked. The instrument is given arotary movement over the face of the member to be lgauged by means of acrank 31 attached to the upper end of the shaft V25 beneath-the nut 26.Upon rotating the instrument fby the crank 31 topass the linger 30 ofthe instrument over the face of the member to be gauged any variationsin the surface will be shown on the indicator by the rise and fall ofthe finger 30 in the usual manner, thus indicating whether or nottheface of the threaded member is normal to the axis thereof.

As shown, the base 10 is provided with-an annular groove or channel 32havingslidably mounted therein a plurality of studs 95 33 threaded in anannular plate tpositioned in the lannular groove or channel 32. A coilspring 35 is wound upon each of the studs between the base and annularplate to provide a cushioned seat for the plate. Inn

The object of this structure will hereinafter I ap ear.

n the form shown in Figs. 1, 2 and 3 the inner periphery of the jaws ormembers 11 and 13 are each provided with a cut away portion 36 for theaccommodation of a flange,

- the threads on the member to be gauged.

They contact or engage the member at several points around its peripherywhen the jaws are clamped thereupon and support the member rigidly vwiththe axis of the threaded portion in the desired position.

That the member to be gauged will readily take the proper positionwithln the machine, it is placed on the annular member 34 with its facedown and as the jaws or clamping members 11 and 13 are .closed upon themember, the threads 38 upon the jaws will engage the threads upon themember to be gauged without bindin or distorting either by reason 4ofthe yiel ing support or seat provided for the annular member ermittingthe tilting thereof in any direction which ma be necessary jto attainthe accurate posltion of the member to be gauged,

In F1g.4, I have shown a modified form of the invention wherein the jaws11 and 13 are formed without the threaded portions 38 and in lieuthereof are rovided with spaced grooves 39 vertically isposed to receiveinterlocking members 40 formed upon arcuate sections 41 having spacedprojections 42 threaded as indicated at 43. These arcuate sectionsaremade in pairs in diff ferentsizes, the object being to provide infterchangeable gripping means whereby the machine may be readily madeadaptable for gauging the faces' of externally threaded members ofvarious sizes, and 1n order to provide a suitable support for thevarious size members to be gau ed, the annular member 34 is dispensedwith and supplanted by a disk 44 mounted ina recess 45 upon springs 46wound upon studs 47 carried by the disk and slidably mounted in thebase. This yielding support may be tilted in an v direction necessary inorder that the thre s upon the members 42 -mayproperlygcoact with hethreads upony the, ember`v tov aan e ile I haveherein describedzinsomejde-v tail the specic embodimentsof'm linrfention, whiclLI deex'n'yto bejnewl-'an Aadvan tageous and may specifically claimfI ,dd'j'notdesirezitto be under,stood that my invention. is to the 'exact' details.of the construction, as it apparent that changes `jxnnayu'he .fm'adewithout departing from the spiritor scope of :theinventon.

Having thus described the variousfea- I tures of my invention, what Iclaim is new and desire` to secure by Letters Patent is:

1. A gauging machlne comprisingl a base,

a stationary clamping jaw on the base, a`

pivotal jaw on the base coacting with thel vmounted inthe recess, -astationary clamping jaw on the base adjacent the recess, a pivotal jawon the base coactin withl the stationary jaw, an indicating instrumentand means `for supporting and rotating the instrument above the'yielding. support. 'l

3. Agauging machine comprising a base having a recess, a yieldingsupport in the recess, a stationary arcuate jaw on the base adjacent therecess, a pivotal jaw on the I base coacting with the stationary jaw, anindicating instrument and means carried by one of the jaws forsupporting and rotating the indicating instrument over the yieldingsupport.

4. A gaugmg machine comprising a base l having a recess therein, ayielding support positioned in the recess an arcuate statlonary clampingjaw on the base, a pivotal clamping jaw coacting therewith, means foropenlng and closing the jaws, anl indicating instrument, means wherebysaid instrumentl is carried by the pivotal jaw and means for rotatingthe indicating instrument.

5.- A gauging machine for threaded members comprising a base having arecess, a yielding support positioned in the recess, a stationaryclamping jaw on the base, a pivotal clampin jaw on the base adapted forcooperation wit the stationary jaw, an interengaging means for the jaws,means operable at will for opening and closing the pivotal jaw, meansupon the jaws for engaging the threads upon a member to be gauged, anindicating instrument and means carried .by the pivotal jaw forsupporting and rotating the indicatlng instrument over the yieldingsupport.

6. A gauging machine comprising a base supported in the recess, anarcuate clamping jaw secured on the base in a fixed position,

an arcuate'clamping jaw pivoted on the base lmeans carried by the armfor rotating the indicatingv instrument above the yielding, support.

having a recess therein, a plate yleldingly 7. A machine for gaugingexternally threaded members comprising a base having a recess therein, ayielding support in the recess, a stationary clamping jaw on the baseadjacent the recess, a. pivoted clamping jaw on the base adapted forcooperation with the stationary clamping jaw, a support carried by thepivotal jaw, an indicating instrument rotatably mounted on the supportand means carried by the support for rotating the indicating instrumentabove the yielding support.

8. A machine for gauging externally threaded members comprising a basehaving a recess therein, a yielding support mounted in the recess, aclamping jaw secured on the base in a. fixed positlon, a clamping jawpivoted on the base and adapted for cooperation with the stationary jaw,means for interengaging the'jaws, means operable at will for opening andclosing the pivotal jaw, threaded segments on the clamping jawsadaptable for cooperation with the threads on a member to be gauged, asupport carried by the ivted jaw, an indicating instrument rotatab ymounted on said support and means on the support carried by the pivotedjaw for rotating the indicating instrument over the member to be gauged.

9. A machine for gauging externally threaded members comprising a base,a yielding support on the base, clamping jaws in juxtaposition to theyielding support, threaded members on the clamping jaws adapted forcooperation, with external threads on a member to be gauged, anindicating instrument and means carried by one of the clamping jaws forsupporting and rotating the indicating instrument over the yieldingsupport.

10. threaded members comprising a base, a yielding support on the base,clamping jaws arranged in juxtaposition to the support, means operableat will for controlling the clamping jaws, threaded members on theclamping jaws adaptable for cooperation with threads ona member to begauged, an indicating instrument and means for supporting and rotataingthe indicating instrument over the yielding support.

11. A machine for gauging externally threaded members comprising a base,a yielding support positioned on the base, a stationary clamping memberin juxtaposition` to said support, a pivotal clamping member coastingwiththe stationary clamping member, means operable at will forcontrolling the pivotal clamping member, demountable members supportedby the clamin jaws, threaded means upon the demountab e' members forcoaction with the threads upon a member to be gauged, a support on thepivotal clamping jaw, an indicatlng instrument rotatably carried by thesupport machine for gauging externally and means for rotatin theindicating instrument over the mem er to be gauged.

12. A machine for gauging externally threaded members comprising a base,a yielding support on the base, a stationary clamping member injuxtaposition to the yielding support, a pivotal clamping member adaptedfor cooperation with the stationary clamping member, means operable atwill for controlling the pivotal clamping member, demountable membersinterlocking with the clamping members, arcuate threaded portions on thedemountable members adapted for engagement with the threads on a melnberto be gauged, a support carried by the pivoted clamping member, a shaftjournaled in the support, an indicating instrument carried by the shaftand means for rotating the shaft to move the instrument over the memberto be gauged.

In testimony whereof I aiiix my signature.

WILLIAM H. BAKER.

